Sun Microsystems, Inc.

Oracle America, Inc.

Tim P Marsland

Sunay Tripathi

Nicolas G Droux

Christoph L Schuba

Kais Belgaied

Andrew G Tucker

Eric Christopher Saxe

Bart Smaalders

Jonathan Chew

Kevin J Clarke

David S Comay

Robert L Berube

Some embodiments provide a system that manages the execution of a software component in a virtualized environment. During operation, the system monitors the execution of the software component from an external location to the virtualized environment. Next, the system assesses an integrity of the software component by comparing the monitored execution to an expected operation of the software component, wherein the expected operation is determined based on source code for the software component. Finally, the system uses the assessed integrity of the software component to facilitate the execution of the software component.

Facilitated introspection of virtualized environments

Some embodiments provide a system that manages the execution of a virtual machine. During operation, the system takes a series of snapshots of the virtual machine during execution of the virtual machine. If an abnormal operation of the virtual machine is detected, the system spawns a set of snapshot instances from one of the series of snapshots, wherein each of the snapshot instances is executed with one of a set of limitations. Next, the system determines a source of the abnormal operation using a snapshot instance from the snapshot instances that does not exhibit the abnormal operation. Finally, the system updates a state of the virtual machine using the snapshot instance.

Virtual machine snapshotting and damage containment

A method for processing packets that includes receiving a first packet for a first virtual machine by a network interface card (NIC), classifying the first packet using a hardware classifier, where the hardware classifier is located on the NIC, sending the first packet to a first one of a plurality of receive rings based on the classification, sending the first packet from the first one of the plurality of receive rings to a first virtual network interface card (VNIC), sending the first packet from the first VNIC to a first interface, and sending the first packet from the first interface to the first virtual machine, where the first virtual machine is associated with the first interface, where the first VNIC and the first virtual machine are executing on a host.

Host operating system bypass for packets destined for a virtual machine

A method of controlling bandwidth including receiving and classifying a packet, sending the packet to a hardware receive ring based on a classification of the packet, and sending, in accordance with an operating mode, the packet to a software receive ring, sending the packet from the software receive ring to a virtual network interface card, where the virtual network interface card is associated with a virtual machine, where the operating mode is adjusted to control the bandwidth consumed by the virtual machine.

Method and system for controlling virtual machine bandwidth

A mechanism is disclosed for implementing a sparse file system for an operating system partition. In one implementation, a non-global partition is created within a global operating system environment. A file system is then established for the non-global partition. This file system may comprise one or more virtual directories, which reference other directories. Referencing other directories in this manner makes it is possible to avoid having to copy all of the files used by processes running in the non-global partition into the file system. As a result, storage and other system resources can be saved.

Mechanism for implementing a sparse file system for an operating system partition

A method and system of managing resource allocation in a non-uniform resource access computer system is disclosed. A method comprises determining access costs between resources in a computer system having non-uniform access costs between the resources. The method also includes constructing a hierarchical data structure comprising the access costs. The hierarchical data structure is traversed to manage a set of the resources.

Method and system for managing resource allocation in non-uniform resource access computer systems

The present invention provides a system for using door translation to perform inter-process communication. The system enables a legacy application program to invoke traditional operations, such as READ and WRITE operations, which would otherwise be unavailable in a doors environment. Transparent to the client process, the system of the present invention translates the otherwise unavailable operation into a door call. Bound by its limitations and constraints, the server process performs a service in response to the door call. The system comprises a system call handler, such as a generic file system, which receives a file operation request from a client process. A door invocation handler, which includes a translator, determines the appropriate server process capable of performing a service corresponding to the operation request, translates the operation request into a door call to the server process, and invokes the door call. The server process performs its service and sends a response back via the operating system kernel to the client process.

System and method for translating file-level operations in a non-door-based operating system to door invocations on a door server

Apparatus, methods, and computer program products are disclosed for temporarily including bootstrap debugging code for use with a client program. The invention improves a user's ability to debug the computer boot process by providing an efficient mechanism for interposing additional or replacement functionality between the client program and bootstrap services. A bootstrap service invocation made by the client program is intercepted and the computer performs the interposed functionality before providing the invoked service.

Growing community of inventors

Half Moon Bay, CA, United States of America

Tim P Marsland